Brake shoe



Oct. 9 1923. I

c. D. PETTIS BRAKE SHOE Filed Sept. 1922 I ITuY -YW w fi lw+ mi Patented Get. 9, 1923.

rr a

CLIFTON D. PETTIS, OF NEW YORK, N. Y.

BRAKE SHOE.

Application filed September To all whom it may concern:

Be it known that I, CLIFTON D. Pnrrrs, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Brake Shoes, of which the following is a specification.

This invention relates to brake shoes, but more particularly to the type having a shell of tough ductile metal embedded in the body of the shoeand has for its primary object to provide a simple and economical. construction which will be stronger and more durable than devices of a similar nature heretofore known. I

The many other objects and advantages of my invention will be better understood by reference to the following specification when considered in connection with the accompanying drawing, illustrating selected embodiments thereof, in which Fig. 1 is a top plan view of the brake shoe complete;

Fig. 2 is an enlarged. section on the line 22 of Fig. 1; i

Fig. 3 is an enlarged transverse section on the line 3-3 of Fig. 1; and

Fig. 4c is a transverse section similar to Fig. 2 of a modified form of brake shoe.

I'leferringto the drawings the brake shoe comprises a shell 10 of tough ductile metal, a body 11 cast thereon, and a key lug 12 secured thereto.

The back of the shell 10 is slitted on each side of the center line thereof and the metal,

folded under to form parallel stiffening ribs 16 in the central portion thereof. The key lug 12 is secured to the shell by inserting the attaching members 20 through the slots 15 produced in the back of the shell by the forming of the ribs 16, and bending these members transversely of the back against the underside thereof. The ribs 16 not only strengthen and stiffen the back but provide a more secure attachment for the key lue The body 11 is cast upon the shell 10 in the usual manner and the metal of the body firmly locks the key lug 12 in position in the slots 15. The end lugs 22 are formed by the cast metal projecting through corresponding openings 23 in the shell.

In the modified form of the invention shown in Fig. 4 of the drawings, ribs 25 correspondingtothe ribs 16 in the previous embodiment are bent downwardly to sub face of the shell.

. strong and 2, 1922. Serial No. 585,907.

stantially a right angle to the back of the shell in the manner described but they are not then folded upwardly against the under These ribs 25 also act to strengthen and stiffen the shell. The attaching members 27 of the key lug 28 are bent downwardly around the lower edge of the ribs 25 and then bent upwardly on the inner face of these ribs in the manner shown.

It is obvious from the foregoing description that my improved brake shoe is simple,

be economically produced. The side and end walls of the shell are preferably reticulated, but any other suitable type of construction may be used.

I am aware that various changes may be made in the construction and arrangements of parts without departing from the spirit of my invention and I reserve the right to make all such as fairly fall within the scope of the following claims.

I claim y 1. In a brake shoe, a reinforcing back slitted on both sides of the center line of the back and the metal bent to provide substantially parallel stiflening ribs extending longitudinally of the shoe.

2. In a brake shoe, a reinforcing back slitted on both sides of the center line of the back and the metal folded under to provide substantially parallel stiffening members extending longitudinally of the shoe in the central portion thereof.

3. In a brake shoe, a reinforcing; back slitted on both sides of the center line of the back and the metal bent to provide a pair of substantially parallel stiffening ribs extending longitudinally of the shoe, and a key lug having: attaching members projectingthrough said back in the slots produced therein by the forming of said ribs and bent beneath said back to secure said lug to said back.

l. In brake shoe. a reinforcing back slitted on both sides of the center line of the back and the metal bent to provide a pair of substantially parallel stiffening ribs ex tending longitudinally of the shoe, and a key lug having attaching members projecting through said back in the slots produced therein by the forming of said ribs and bent beneath the corresponding ribs to secure said lug to said back. CLIFTON D. PETTIS.

durable in construction and may 

